(((It12345))) I take Cymbalta which causes terrible nightmares for me. I was afraid to sleep too.
I found that taking a prescribed sleeping pill and 0.25mg of Ativan also prescribed gets me into a deep enough sleep that the dreams are not as vivid and I don't remember them as well when I wake up.
I'm sorry you are afraid to sleep. I've been there. I hope your doctor can help.